- When the go-client reflector relists, the ResourceVersion list option is set to the reflector's latest synced resource version to ensure the reflector does not "go back in time" and reprocess events older than it has already processed. If the server responds with an HTTP 410 (Gone) status code response, the relist falls back to using `resourceVersion=""`. ([#83520](https://github.com/kubernetes/kubernetes/pull/83520), [@jpbetz](https://github.com/jpbetz))

* Fix an issue in inter-pod affinity predicate that cause affinity to self being processed correctly ([#62591](https://github.com/kubernetes/kubernetes/pull/62591), [@bsalamat](https://github.com/bsalamat))

- Added `kubelet` Topology Manager metrics to track admission requests processed and occured admission errors. ([#115137](https://github.com/kubernetes/kubernetes/pull/115137), [@swatisehgal](https://github.com/swatisehgal))

- Introduce kubectl-convert plugin. ([#96190](https://github.com/kubernetes/kubernetes/pull/96190), [@soltysh](https://github.com/soltysh)) [SIG CLI and Testing]
- Kube-scheduler now logs processed component config at startup ([#96426](https://github.com/kubernetes/kubernetes/pull/96426), [@damemi](https://github.com/damemi)) [SIG Scheduling]

- Updating kubelet permissions check for Windows nodes to see if process is elevated instead of checking if process owner is in Administrators group ([#111078](https://github.com/kubernetes/kubernetes/pull/111078), [@marosset](https://github.com/marosset)) [SIG Node and Windows]

## Dependencies

### Added

  For more information, see [#47131](https://github.com/kubernetes/kubernetes/issues/47131)

*   If a namespaced resource is owned by a cluster scoped resource, and the namespaced dependent is processed before the cluster scoped owner has ever been observed by the garbage collector, the dependent will be erroneously deleted.

  For more information, see [#54940](https://github.com/kubernetes/kubernetes/issues/54940)

- Added `singleProcessOOMKill` flag to the kubelet configuration. Setting that to true enable single process OOM killing in cgroups v2. In this mode, if a single process is OOM killed within a container, the remaining processes will not be OOM killed. ([#126096](https://github.com/kubernetes/kubernetes/pull/126096), [@utam0k](https://github.com/utam0k)) [SIG API Machinery, Node, Testing and Windows]

([#44744](https://github.com/kubernetes/kubernetes/pull/44744), [@yguo0905](https://github.com/yguo0905))

  * Kubernetes now shares a single PID namespace among all containers in a pod when running with docker >= 1.13.1. This means processes can now signal processes in other containers in a pod, but it also means that the `kubectl exec {pod} kill 1` pattern will cause the Pod to be restarted rather than a single container. ([#45236](https://github.com/kubernetes/kubernetes/pull/45236), [@verb](...

for COS images on GCE has changed to `/home/kubernetes/flexvolume`, rather than `/etc/srv/kubernetes/kubelet-plugins/volume/exec`. Existing Flexvolume installations in clusters using COS images must be moved to the new directory, and installation processes must be updated with the new path. ([#58171](https://github.com/kubernetes/kubernetes/pull/58171), [@verult](https://github.com/verult))

* Default values differ between the Kubelet's componentconfig (config file) API and the Kubelet's...

    * Each deployment method should bind users/groups to the ClusterRoles if they are using this feature.
* Adds AllowPrivilegeEscalation to control whether a process can gain more privileges than its parent process ([#47019](https://github.com/kubernetes/kubernetes/pull/47019), [@jessfraz](https://github.com/jessfraz))